TABLE 1.

Comparison of serum and salivary levels of thiocyanate using one way ANOVA

	GROUPS	N	Mean	Std. Deviation	Statistics/ mean squares	df2(welch) / F(Anova)	P VALUE
SERUM	NON-SMOKERS	20	58.6725	2.477702	70788.03	8872.87	<0.001
	EX-SMOKERS	20	58.4695	2.668215
	SMOKERS	40	142.7065	3.048325
	Total	80	100.6388	42.42497
SALIVA	NON-SMOKERS	20	1551.305	138.7472	22501364	1204.709	<0.001
	EX-SMOKERS	20	1554.282	142.0102
	SMOKERS	40	3052.838	132.9409
	Total	80	2302.816	766.7201